alt Hacker NewsEditable from field is also the only reason I was using it with protonmail. I can't remember if it was a protonmail limitation or a Thunderbird one that meant I had to pre-add any email addresses before I could send any messages from them though.
Now I'm on fastmail, the from address is an input box that I can put anything into.
Replies
pluc • today at 9:33 PM
If by "input box" you mean "drop down list" and by "anything" you mean "any of my account's configured email addresses" then yes.. but FastMail doesn't just let you put anything in the From field - on the web or Android as far as what my subscription shows me.
The Thunderbird from field is free text. You get a warning about your server having to support it though.